/Engine/Plugins/Online/OnlineSubsystemUtils/Source/OnlineSubsystemUtils/Public/VoiceEngineImpl.h
Used when receiving remote voice data to set the amplitude of a remote talker's incoming audio.
0 upon success, an error code otherwise
virtual uint32 SetRemoteVoiceAmplitude ( const [FUniqueNetIdWrapper](API\Runtime\CoreOnline\Online\FUniqueNetIdWrapper) & RemoteTalkerId, float InAmplitude )